Gauge pin



' April30, 1940. OV R 2,199,288

GAUGE PIN Filed April 5, 1939 M'llmm 51 H 001 51 Patented Apr. 30, 1940 V UNITED STATES PATENT ,OFFICE.

GAUGE PIN William A. Hoover, Pittsburgh, Pa. Application April 5, 1939, Serial No. 266,188 Claims. (01. 101-415 This invention relates to an improved gauge pin adapted to be removably applied to the tympansheets of printing presses for locating the sheet to be printed. Y

51 It is a primary aim of this invention to provide an improved gauge pin of simple construction including an abutment surface including a smooth uninterrupted portion adapted to be engaged by the sheet to be printed.

Still a further aim of the invention is to provide improved means for attaching the gauge pin to the tympan sheet and for slidably con- 2m Figure 2 is a side elevational View of the same,

Figure 3 is an end view in elevation looking I toward the abutment surface,

Figure 4-is a longitudinal vertical sectional view taken along the line 4-4 of Figure 1,

Figure 5 is a plan view of the blank from which the base portion of the pin is formed, and

Figure 6 is a corresponding view of the blank from which the slide is formed.

Referring more particularly to the drawing,

wherein like reference characters designate like or corresponding parts throughout the different views, I0 designates generally the gauge pin which includes the base and slide designated generally II and I2, respectively.

BaseII, as best seen in Figure 5, is formed from a single blank of relatively resilient metal and including a head or plate I3 provided with the spaced longitudinally disposed slots I4 intermediate of its ends. Plate I3 adjacent one of its longitudinal edges is elongated to form the flanges I5 and said edge is likewise provided with projecting prongs [6. The strip between the slots I4, designated [1, is scored at the end of one of the slots I4 as indicated at I8, for a purpose which will hereinafter be described. Formed integral with and projecting from the opposite longitudinal edge of plate I3 are the corresponding blades I9 having the undulating free ends 20 as seen in Figures 1 and 2. Disposed between the blades I9 is a blade H which is spaced from blades I9 and which is provided with a pointed end 22 which extends beyond the ends 20 and which is bent upwardly.

As best seen in Figures 2 and 4, plate I3 is bent longitudinally through the strip IT to form the abutment surface 23 which is disposed substantially at right angles to the blades I9 and 2I and from which depends the prongs I6. Depending obliquely from the upper edge of the abutment surface 23 is a diagonally disposed portion 24. One of the slots M is disposed in the surface 23 while the other slot [4 is positioned in the portion 24 and in alignment with the first mentioned slot, as seen in Figure 4. The scored portion I8 enables the forward edge 25 of the strip ll to project outwardly over the abutment surface 23 above its slot I4, as best seen in Figure 4.

- The slide I2 is likewise formed of a single strip of thin relatively flexible metal and includes a thereof engaging above and beneath each of the blades I9, as seen in Figure 1, and with the tongue 28 projecting through the aligned slots I4.

The ears 2'! enable the member I2 to be moved longitudinally of the base II and yet provided suiilcient frictional engagement'withthe blades I9 to prevent casual movement of the slide l2. The free end of the tongue 28 is inclined upwardly as indicated at 30 while its intermediate portion is bowed upwardly as seen at 3|. The

flanges 15 are bent to project rearwardly or toward the portion 24, as best seen in Figure 1, to

provide rounded ends for the abutment surface The gauge pin I0 is adapted to be applied to a tympan sheet, not shown, by causing the pointed end 22 to pierce the sheet at spaced points so that its intermediate portion is disposed beneath the sheet and its ends above the sheet to locate the base II relatively thereto and when thus properly adjusted plate I3 may be pressed downwardly to cause the prongs I6 to pierce the platen, not shown. A plurality of gauge pins I0 may be applied to the tympan sheet to be engaged by two edges of a sheet to be printed, not shown, to definitely locate and position said sheet relatively'to the tympan sheet. In using the pin it is necessary that the projecting end of the tongue 28 shall be either close to the platen or remote therefrom, depending on the nature of the work to be printed. As the metal of the tongue 28 is substantially ductile its projecting end portion may be shaped or moved inwardly towards the A tongue 25 projects from one side platen or arranged remote therefrom as desired and will hold the position to which fashioned. By having the end of the tongue close to the platen the pin will be best adapted for close register work and for curled paper to insure that the curled edges of sheets to be printed will engage under the end 30 to be directed thereby against the abutment surface 23, which constitutes the front of the gauge pin Ii] and which is adapted to hold the sheet in position for printing. When the gauge pin H] is in position for use the bottom free edge of the abutment surface 23 is resting on the tympan sheet to form a smooth substantially fiat outwardly projecting surface for engaging a sheet to be printed. The blade 2! is bent to project upwardly relatively to the blades l9 so that it will frictionally engage the under side of the body portion 26 to more eiiectively prevent casual movement of the slide I2. The lip 29 forms a finger grip by means of which slide i2 is adapted to be moved longitudinally of base H for adjusting the angle and length of the end 3!) of the tongue 28.

Various modifications and changes in the precise construction and arrangement of the parts forming the pin are contemplated and may obviously be resorted to, and the right is therefor expressly reserved to make such variations and changes as fall within the spirit and scope of the invention as hereinafter defined by the appended claims.

I claim as my invention:

1. A device of the class described comprising a base member including a head, a plurality of blades projecting from one edge thereof and disposed in spaced apart relationship relatively to each other, one of said blades being elongated and terminating in a point, said head being provided with spaced longitudinal slots, said head being bent upwardly, adjacent said first mentioned edge, back upon itself and between said slots for disposing the slots in alignment with each other, prongs projecting from the opposite free edge of said head portion; a slide including a base portion provided with outwardly projecting ears, at each end, for engaging above and beneath certain of said blades for slidably connecting said portion to the base, and a tongue rality of spaced substantially parallel blades, a

head at one end of said base, said head having an upwardly projecting portion bent back upon itself to provide an abutment surface, said head being provided with aligned slots, a slide including a body portion having outwardly projecting cars at each end to engage above and beneath certain of said blades, and a tongue extending from said body portion through the aligned slots.

3. A gauge pin comprising a base member including a plate bent to provide an abutment surface and a downwardly inclined portion, said abutment surface and portion being provided with aligned slots, a plurality of spaced substantially parallel blades projecting obliquely from said portion and adapted to engage a tympan sheet; a slide including a body portion provided with ears at each end for engaging above and beneath certain of said blades, and a tongue projecting therefrom and extending through the aligned slots.

4. A gauge pin comprising a base member ineluding three spaced blades connected by a head portion, said head portion having spaced longitudinal slots and being bent relatively to said blades to dispose said slots in alignment to provide an outer abutment surface disposed substantially at right angles to the blades, prongs depending from the bottom edge of said abutment surface; a slide including a body portion having pairs of outwardly projecting ears for engaging above and beneath the two outer blades, said body portion being disposed above the intermediate blade, and a tongue projecting from said body portion and extending through the aligned slots.

5. A gauge pin including a base formed of a plurality of spaced substantially parallel blades adapted to engage a tympan sheet, a head connecting said blades and including an abutment portion and an obliquely disposed portion depending from the upper edge thereof, said abutment and obliquely disposed portion having aligned slots; and a slide including ears engaging above and beneath certain of said blades, and a tongue having its free end extending through said slots.

WILLIAM A. HOOVER. 

